Thank you, unfortunately I think my nem and corals may be too far gone to save at this point but I was awestruck when I would routinely have great parameters yet my entire tank seemed wilted and even the hardiest of corals died (GSP, xenia, Kenya tree) but they all seemed great for like the first week they were in my tank, seemed to be taking off and then bam! Stopped opening fully and slowly withered away. All other inverts appear ok, just a starfish and urchin but if it's slowly killing my corals they may be next, looks like I'm rearranging my rock work again... Oh well. I thought it said marine safe on the bag but I could be mistaken. It definitely sticks to any magnet (algae scrubber, ph) so I'm sure it's magnetic, I just hope I found out why I suddenly suck at keeping even simple corals. Before this I was ready to just go back to FOWLR
... You guys have given me hope that maybe I don't just fail miserably at keeping corals.